Concrete insert



E. DELLA CONCRETE INSERT 2 Sheets-Sheet 1 Filed March 20. 1922 INVENTOR. E nesf Del/a A TTORNEYS.

Nov. 20, 1923 1,474,956

E. DELLA CONCRETE INSERT Filed March 20. 1922 2 Sheets-Sheet 2 I l: 7 'llLtJ" INVENTOR. vesf' 17a //a ATTOR EYS.

Patented Nov. 21), 1923.

UNHTEEE ETATES ERNEST DELLA, OF ROCHESTER, NEW YORK.

concsnrn inseam.

Application filed March 20, 1922.

To all whom it may concern:

Be it known that I, ERNEST DELLA, a citizen of the United States of America, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Con crete Inserts, of which the following is a specification.

The object of this invention is to provide a new and improved type of concrete insert which can be readily attached to the forms of the structure in a manner that will leave the insert without any outwardly projecting nails embedded in the concrete with the insert after the concrete has been poured and the mold has been removed.

Another object of this invention is to provide the insert with an anchor plate that permits a circumferential adjustment of the suspension bolt within the insert.

These and other objects of this invention will .be fully illustrated in the drawings, described in the specification and pointed out in the claims at the end thereof.

In the accompanying drawings:

Figure 1 is a perspective view of the insert and the spool for fastening the insert to the form.

Figure 2 is a perspective view of the in- W sert illustrating the top thereof.

'Figure 8 is a detail perspective view of the anchor plate illustrating the top thereof.

Figure 4 is a detail perspective view of the anchor plate illustrating the bottom 35. thereof.

Figure 5 is a sectional perspective view of the insert illustrating how the insert is temporarily fastened to the frame work or form for the concrete floor or wall in which the insert is to be embedded.

Figure 6 is a vertical sectional view of the insert after being embedded in the concrete showing how the anchor plate is inserted into the insert.

Figure 7 is a similar sectional view of the insert showing the anchor plate in place in the insert.

Figure 8 is the same sectional view of the insert showing the insertion of the suspension bolt into the insert for the purpose of suspending it from the anchor plate.

Figure 9 is a sectional view of the insert with suspension bolt supported from the anchor plate.

Figure is a bottom plan view of the in Serial No. 545,112.

sert showing the anchor plate and suspension bolt in place therein.

In the several figures of the drawing, like reference numerals indicate like parts.

Concrete inserts are used and embedded in the ceilings, floor and walls of concrete structures for the purpose of providing means whereby lighting fixtures pipes, etc. may be readily and securely suspended from and attached to the concrete. For this reason the locations for the inserts are determined in advance and are then fastened to these predetermined points so that the concrcte can be poured around it. After the concrete has. set the insert is securely embedded in it. The temporary wooden form is then removed from the concrete structure. It is desirable to use an insert that is fastened to the form with means which will come off with the form so that the bottom of the insert and the concrete surrounding it presents a surface that need not be finished off by clipping off the nails or other means that have been used to fasten the insert to the form prior to the pouring of the concrete.

The concrete insert forming the subject matter of my present invention is made up of an inverted conical shell 1. This shell is closed at the top leaving a mall opening 2 in the center thereof. At the bottom the shell is provided with the large circular opening 3 which is surrounded by the horizontal flange 1-. At two diametrically opposite points on the inside of the shell of the insert are formed a pair of semicylindrical channels or pockets 5 and 6. These channels extend from the inside of the flange i at the bottom of the shell to the inside of the top of the shell and their outer walls protrude on the outside of the shell and form a pair of ribs 7 and 8 thereon for a purpose that will presently appear.

The insert is embedded in the concrete with its open end facing the forms for the 1 structure. The location for each of the inserts is determined in advance and is marked on the form. The insert-is fastened to these points by means of a wooden spool 9 which has a diameter equal to or we slightly less than the diameter of the opening 3 in the bottom of the shell l. .This spool is fastened to the woodwork of the form 'by means ofa pair of nails 10 and 11 which are driven into the top of the spool 9 no through a pair of vertical holes 12 and 13 provided therein. These holes are spaced a suitable and equal distance from the center of'the spool. Afte'r' the spool has thus been located and fastened to the form the shell 1 is inserted over it as illustrated in Figures 1 and 5. The spool then'completely closes the opening 3 in the bottom of the The plate can then be lifted into the shell in this position until its horizonta axis has passed the opening 3 in the bottom of the shell. The plate is then free to fall to one side and drop back while centering itself on the flange 4 which supports it on the inside of the/shell? The plate then occupies the insert and centers the shell thereon. The I spool 9 projects into the shell a suitable distance which may be approximately two thirds or three quarters of thendepth of the insert. A third nail 1.4..is then driven through the small hole 2 in the top of the spool and.

insert into the top of the thus fastens the shell 1 to the. spool and position illustrated in Figure T.

The suspension bolt 18 is inserted into the shell 1 after the anchor plate or follower has been placedtherein as above described. This is done by lifting the plate 15 by means of the head of the-bolt 18. F or this purpose the bolt is preferably moved into the shell in turn to the concrete form. The head of the nail 14 closes the small opening 2 in the .t'opof the insert so that the concrete cannot enter the shellthroughthis hole orthe hole. 3 in the bottom of the insert.

After the inserts have been placed and fastened to the concrete form the concrete is poured around them andallowed to set.

in an inclined position to theplate which is raised by-it on one side until the head of the bolt has passed the edgeof the plate.

The plate then drops back allowing the head of the bolt to project beyond it. The plate 15 is then turned so that the slot 16 can straddle the shank of the bolt 18 when the plate 15 is allowed to drop back'onto the flange 4 with the head of the bolt 18 The ribs 7 and 8 project outwardly from thewall of the shell 1- on the outside thereof. hen. therefore,the shell is embedded in the concrete these ribs prevent it from rotating therein. This adds to the rigidity with which the insert is anchored in the concrete. After the concrete has set and is hardened the form is taken off from .the concrete and In doing sopulled (away from the inserts. the spools 9 are pulled away with the form leaving only the single nail 14 on. the inside of the shell in place with the insert. This nail can be bent aside as illustrated in F ig- A ures 6 to 9 inclusivebut this may be omitted as the nail is not visible from the outside nor does it obstruct the insertion or adjustment of the anchor plate or follower from which the suspension bolt is supported.

The insert is then ready to receive the anchor plate 15. This plate is circular in outline and is equal in diameter tO-tl1e b0tl30lll of the shell 1 and is adapted to rest on top of the flange 4. In the periphery of the anchor plate or follower 15 is provided the curved slot 16which. extends a short dis- :tance into the plate 15v curving to one side thereof. Surrounding the top of the slot is the ridge 17 forming a pocket thereon in which the head of the suspension bolt is adapted to rest and be held against rotation.

The anchor plate or follower 15 is inserted into the insert by lifting the plate vertieally into the opening 3 in the bottom of the insert. This is made possible because ofthe slot 16. The plate 15 is heldso that-the' flange 4 of theinsert projectsinto the slot 16 atapoint opposite to one-of the semicylindricalichannels 5' or 6. .This' permits to one SidB Qfr the shell.

resting in the pocket formed by the ridge surrounding the slot at the top of the plate.

The position which the parts occupy after the bolt has been inserted is illustrated in Figure 10. As shown in this figure the shank islocated near the edge of the flange 4 of the insert. When it is desired to adjust the location ofthe bolt the follower or anchor plate can be turned within the shell 1 moving the shank of the bolt to any point within the periphery of the hole 3 of the insert. A great range of adjustment in either direction from the center of the insert is thus secured;

For the purpose of holding the follower or anchor plate in place on the flange 4 after it has been adjusted thereon the flange 1 is provided with a series of small knobs 19 on the inside of the shell. The bottom of the follower 15 is provided with a series'of corresponding depressions which are adapted to be engaged by the knobs of the flange when the follower rests on the flange. This prevents the plate 15 from turning on the flange 4 after it has been placed thereon unlessthe plate is slightly lifted to disengage the knobs of the flange from the depressions The spools may be made slightlycone shaped with the upper'iendj of a slightly the upper partofoneside ofithe 913136152. .to be inserted intofthe channel which allows the. plate to 3 shift smaller d-iameterthan the'lower end 'there- 30ft; -,-The.-*:opening ofthe -insert can then easlly be inserted over the small diameter of i the spool and driven or wedged onto the larger diameter ofthe spool. This will then hold the insert in place on the form without driving a nail through the top of the insert into the spool.

I claim:

1. In a concrete insert, the combination of a shell havin a large opening in the bottom thereof, a ange surrounding the large opening in the bottom of said shell, a channel or pocket formed in the wall on the inside of said shell, a follower or anchor plate adapted to be inserted into the bottom of said shell, said follower or anchor plate having a slot provided in the periphery thereof to allow a portion of said plate to be inserted into the opening in the bottom of said shell and be moved slightly endways into said channel or pocket to permit the insertion of the remainder of said follower or anchor plate, into said shell above said flange.

In a concrete insert, the combination of a shell having asmall opening in the top thereof and a large opening in the 'bottom thereof, a flange surrounding the large opening in the bottom of said shell, a pocket formed in the wall on the inside of said shell, a follower having a slot in the periphery thereof, said follower being adapted to be inserted into the large opening in the bottom of said shell by placing the slot of the follower against the flange surrounding the bottom of said shell and moving the portion of the follower surrounding the slot into said pocket in the wall on the inside of said shell to permit the raising of the Whole of said follower through the opening in the bottom of said shell.

3. In a concrete insert, the combination of an inverted conical shell having a large opening in th bottom thereof, ribs formed on the outside of said shell, pockets or channels formed on the inside of said shell oppo site to said ribs on the outside of the shell, a follower, said pockets being adapted to have said follower extend into them to permit the insertion of said follower into the opening in the bottom of said shell.

4-. In a concrete insert, the combination of a shell having a small opening in the top thereof and a large opening in the bottom thereof, a flange surrounding the large open ing in the bottom of said shell, a pocket formed in the wall on the inside of said shell, a follower having a. slot in the periphery thereof, said follower being adapted to be inserted into the large opening in the bottom of said shell by moving the follower so that the slot therein embraces the flange of the shell, the follower being turned around the flange at the point of contact until it is placed within the shell.

5. In a concrete insert, the combination of a shell, having an opening in the bottom thereof, a follower or anchor plate having a slot in the periphery thereof, said follower or anchor plate being adapted to be inserted edgeways into the opening in said shell with the slot in said follower or anchor plate embracing the edge of the opening of the shell, means on the inside of said shell to support said follower or anchor plate therein after it has been inserted therein, a suspension bolt adapted to be inserted and suspended from said follower or suspension plate through the slot in the periphery thereof.

6. In a concrete insert, the combination of an inverted conical shell having an annular flange projecting inwardly around the bot tom thereof, said flange being of even width all around, a sustaining plate engaging with flange, said plate having a slot in the periphery thereof, said slot being utilized to get the plate in position within said conical shell.

7. In a concrete insert, the combination of a shell having an opening in the bottom thereof, a flange surrounding said opening, a channel in the wall of said shell, follower plate having a slot in the periphery there of, said follower plate being adapted to be inserted edgeways into the opening in said shell by placing the slot in the follower plate so that the portion of the follower plate on one side of the slot can be moved into the channel on the inside of said shell until the whole of the follower has been in serted into said shell.

In testimony whereof I aflix my signature.

ERNEST DELLA.

till 

